App crashes when minify is enabled in gradle

[grndvl1]

Just noticed this issue that if I release my app it crashes everytime on ANRequests. It wasn't crashing on Debug builds just releases. So really only changes to gradle are the minifyEnabled true, and the proguard using the proguard-android.txt thats it, my proguard has nothing in it. Release build fails... then if I change minifyEnabled to false then the release app runs just fine.

Fatal Exception: java.lang.NullPointerException
throw with null exception
com.matthewscorp.board.game.repositories.LatestCarousalRepository$setLatestCarousalList$3$1.onResponse (LatestCarousalRepository.java:66)
com.androidnetworking.common.ANRequest.deliverSuccessResponse (ANRequest.java:40)
com.androidnetworking.common.ANRequest.access$6500 (ANRequest.java)
com.androidnetworking.common.ANRequest$6.run (ANRequest.java:4)

added the -dontwarn okio.** and it still crashes